INIT: Entering runlevel: 2 [[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-mmots-kasan-gce-4,10.128.0.44' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 56.640209] ------------[ cut here ]------------ [ 56.641264] WARNING: CPU: 1 PID: 2990 at ./include/net/sock.h:1507 strp_data_ready+0x2b7/0x390 [ 56.642697] Kernel panic - not syncing: panic_on_warn set ... [ 56.642697] [ 56.643698] CPU: 1 PID: 2990 Comm: syzkaller212276 Not tainted 4.14.0-rc5-mm1+ #18 [ 56.644928] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.646231] Call Trace: [ 56.646584] <IRQ> [ 56.646895] dump_stack+0x194/0x257 [ 56.647562] ? arch_local_irq_restore+0x53/0x53 [ 56.648229] ? vsnprintf+0x1ed/0x1900 [ 56.648750] panic+0x1e4/0x41c [ 56.649223] ? refcount_error_report+0x214/0x214 [ 56.649866] ? show_regs_print_info+0x65/0x65 [ 56.650616] ? __warn+0x1a9/0x1e0 [ 56.651112] ? strp_data_ready+0x2b7/0x390 [ 56.651760] __warn+0x1c4/0x1e0 [ 56.652222] ? strp_data_ready+0x2b7/0x390 [ 56.652879] report_bug+0x211/0x2d0 [ 56.653394] fixup_bug+0x40/0x90 [ 56.653875] do_trap+0x260/0x390 [ 56.654339] do_error_trap+0x120/0x390 [ 56.654935] ? do_trap+0x390/0x390 [ 56.655417] ? strp_data_ready+0x2b7/0x390 [ 56.656024] ? tcp_rcv_state_process+0x335/0x4850 [ 56.656694] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 56.657360] do_invalid_op+0x1b/0x20 [ 56.657915] invalid_op+0x18/0x20 [ 56.658401] RIP: 0010:strp_data_ready+0x2b7/0x390 [ 56.659070] RSP: 0018:ffff8801db306b18 EFLAGS: 00010206 [ 56.659906] RAX: ffff8801d1d4c0c0 RBX: ffff8801ce00dc48 RCX: ffffffff847af437 [ 56.665279] RDX: 0000000000000100 RSI: ffff8801d0d3cb20 RDI: ffffffff85cc4d20 [ 56.672530] RBP: ffff8801db306b38 R08: 0000000000000005 R09: 1ffffffff0cddfc9 [ 56.679769] R10: ffff8801db306a00 R11: dffffc0000000000 R12: ffff8801d0d3ca80 [ 56.687008] R13: ffff8801ce00dc50 R14: ffff8801d1c31512 R15: 0000000000000001 [ 56.694257] ? strp_data_ready+0x2b7/0x390 [ 56.698464] ? strp_data_ready+0x2b7/0x390 [ 56.702676] psock_data_ready+0x56/0x70 [ 56.706623] tcp_child_process+0x559/0x990 [ 56.710833] ? refcount_inc_not_zero+0xc1/0x180 [ 56.715475] ? refcount_add+0x23/0x60 [ 56.719249] ? tcp_timewait_state_process+0x1380/0x1380 [ 56.724586] ? tcp_filter+0x111/0x160 [ 56.728356] tcp_v4_rcv+0x1827/0x2f80 [ 56.732145] ? tcp_v4_early_demux+0xa30/0xa30 [ 56.736619] ip_local_deliver_finish+0x2e2/0xba0 [ 56.741346] ? inet_del_offload+0x40/0x40 [ 56.745465] ? nf_hook_slow+0xd3/0x1a0 [ 56.749324] ip_local_deliver+0x1ce/0x6e0 [ 56.753441] ? ip_call_ra_chain+0x6d0/0x6d0 [ 56.757742] ? check_noncircular+0x20/0x20 [ 56.761947] ? inet_del_offload+0x40/0x40 [ 56.766064] ? __local_bh_enable_ip+0x9d/0x160 [ 56.770618] ? ipt_do_table+0xd6f/0x1330 [ 56.774652] ip_rcv_finish+0x887/0x19a0 [ 56.778601] ? ip_local_deliver_finish+0xba0/0xba0 [ 56.783504] ? ip_rcv+0xf07/0x1820 [ 56.787013] ? lock_downgrade+0x990/0x990 [ 56.791133] ? nf_nat_ipv4_in+0x1cd/0x270 [ 56.795247] ? iptable_nat_ipv4_fn+0x40/0x40 [ 56.799632] ? nf_hook_slow+0xd3/0x1a0 [ 56.803490] ip_rcv+0xc3f/0x1820 [ 56.806830] ? ip_local_deliver+0x6e0/0x6e0 [ 56.811138] ? ip_local_deliver_finish+0xba0/0xba0 [ 56.816038] ? ip_local_deliver+0x6e0/0x6e0 [ 56.820331] __netif_receive_skb_core+0x1a3e/0x34b0 [ 56.825315] ? try_to_wake_up+0x115/0x1850 [ 56.829524] ? nf_ingress+0x9f0/0x9f0 [ 56.833293] ? __lock_acquire+0x6aa/0x3d50 [ 56.837499] ? find_held_lock+0x35/0x1d0 [ 56.841538] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 56.846699] ? find_held_lock+0x35/0x1d0 [ 56.850740] ? print_irqtrace_events+0x270/0x270 [ 56.855463] ? update_curr+0x45c/0xa60 [ 56.859320] ? lock_downgrade+0x990/0x990 [ 56.863441] ? fastpath_timer_check+0x7d5/0xa70 [ 56.868084] ? __lock_acquire+0x6aa/0x3d50 [ 56.872285] ? check_noncircular+0x20/0x20 [ 56.876487] ? check_noncircular+0x20/0x20 [ 56.880690] ? print_irqtrace_events+0x270/0x270 [ 56.885413] ? check_noncircular+0x20/0x20 [ 56.889627] ? hrtimer_forward+0x2d0/0x2d0 [ 56.893838] ? find_held_lock+0x35/0x1d0 [ 56.897870] ? lock_acquire+0x1d5/0x580 [ 56.901816] ? process_backlog+0x45f/0x740 [ 56.906016] ? lock_acquire+0x1d5/0x580 [ 56.909955] ? process_backlog+0x1ab/0x740 [ 56.914164] ? lock_release+0xa40/0xa40 [ 56.918104] ? __lock_is_held+0xb6/0x140 [ 56.922141] __netif_receive_skb+0x2c/0x1b0 [ 56.926429] ? __netif_receive_skb+0x2c/0x1b0 [ 56.930894] process_backlog+0x203/0x740 [ 56.934920] ? mark_held_locks+0xaf/0x100 [ 56.939045] net_rx_action+0x792/0x1910 [ 56.942998] ? napi_complete_done+0x6c0/0x6c0 [ 56.947461] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 56.952444] ? trace_hardirqs_on+0xd/0x10 [ 56.956561] ? _raw_spin_unlock_irq+0x27/0x70 [ 56.961022] ? __run_timers+0x16f/0xb90 [ 56.964973] ? del_timer_sync+0x240/0x240 [ 56.969093] ? timerqueue_add+0x1e9/0x280 [ 56.973213] ? enqueue_hrtimer+0x162/0x490 [ 56.977415] ? __remove_hrtimer+0x190/0x190 [ 56.981713] ? check_noncircular+0x20/0x20 [ 56.985916] ? find_held_lock+0x35/0x1d0 [ 56.989950] ? clockevents_program_event+0x163/0x2e0 [ 56.995023] ? print_irqtrace_events+0x270/0x270 [ 56.999753] ? __lock_is_held+0xb6/0x140 [ 57.003791] ? check_noncircular+0x20/0x20 [ 57.007993] ? __local_bh_enable+0x5f/0x70 [ 57.012194] ? __do_softirq+0x7a0/0xb85 [ 57.016138] ? lock_downgrade+0x990/0x990 [ 57.020255] ? __irqentry_text_end+0x4/0x4 [ 57.024456] ? do_raw_spin_trylock+0x190/0x190 [ 57.029005] ? do_timer+0x50/0x50 [ 57.032431] ? __lock_is_held+0xb6/0x140 [ 57.036472] __do_softirq+0x2d7/0xb85 [ 57.040248] ? __irqentry_text_end+0x4/0x4 [ 57.044447] ? irq_exit+0xbb/0x200 [ 57.047953] ? smp_apic_timer_interrupt+0x16b/0x700 [ 57.052938] ? smp_reschedule_interrupt+0xe6/0x670 [ 57.057835] ? smp_call_function_single_interrupt+0x640/0x640 [ 57.063688] ? _raw_spin_lock+0x32/0x40 [ 57.067638] ? handle_edge_irq+0x2b4/0x7c0 [ 57.071853] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 57.076669] do_softirq_own_stack+0x2a/0x40 [ 57.080956] </IRQ> [ 57.083161] do_softirq.part.22+0x14d/0x190 [ 57.087449] ? ip_finish_output2+0x87a/0x1460 [ 57.091911] __local_bh_enable_ip+0x135/0x160 [ 57.096377] ip_finish_output2+0x8ad/0x1460 [ 57.100670] ? dst_output+0x140/0x140 [ 57.104436] ? check_noncircular+0x20/0x20 [ 57.108638] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 57.113620] ? ipt_do_table+0xd04/0x1330 [ 57.117647] ? trace_hardirqs_on+0xd/0x10 [ 57.121763] ? __local_bh_enable_ip+0x9d/0x160 [ 57.126312] ? ipt_do_table+0xd6f/0x1330 [ 57.130343] ? trace_hardirqs_on+0xd/0x10 [ 57.134460] ? ipv4_mtu+0x28c/0x3d0 [ 57.138055] ? rt_cpu_seq_show+0x2c0/0x2c0 [ 57.142259] ? __lock_is_held+0xb6/0x140 [ 57.146307] ip_finish_output+0x85e/0xd10 [ 57.150422] ? ip_finish_output+0x85e/0xd10 [ 57.154726] ? ip_fragment.constprop.50+0x200/0x200 [ 57.159717] ? iptable_mangle_hook+0xa9/0x550 [ 57.164195] ? nf_hook_slow+0xd3/0x1a0 [ 57.168061] ip_output+0x1cc/0x860 [ 57.171570] ? ip_mc_output+0x1350/0x1350 [ 57.175694] ? ip_fragment.constprop.50+0x200/0x200 [ 57.180684] ip_local_out+0x95/0x160 [ 57.184368] ip_queue_xmit+0x8c6/0x18e0 [ 57.188313] ? tcp_rcv_state_process+0x4646/0x4850 [ 57.193219] ? ip_build_and_send_pkt+0xc30/0xc30 [ 57.197962] ? refcount_dec_if_one+0x20/0x20 [ 57.202342] ? __tcp_v4_send_check+0x1b8/0x350 [ 57.206887] ? tcp_options_write+0x228/0x940 [ 57.211268] tcp_transmit_skb+0x1ab7/0x3840 [ 57.215580] ? __tcp_select_window+0x8d0/0x8d0 [ 57.220162] ? kasan_kmalloc+0xad/0xe0 [ 57.224023] ? __kmalloc_node_track_caller+0x47/0x70 [ 57.229097] ? memset+0x31/0x40 [ 57.232351] ? __alloc_skb+0x57e/0x780 [ 57.236210] ? skb_copy_and_csum_dev+0x360/0x360 [ 57.240947] ? sock_def_wakeup+0x222/0x350 [ 57.245161] tcp_send_ack.part.37+0x3bb/0x650 [ 57.249628] tcp_send_ack+0x49/0x60 [ 57.253222] tcp_rcv_state_process+0x4646/0x4850 [ 57.257954] ? tcp_finish_connect+0x410/0x410 [ 57.262423] ? __release_sock+0xca/0x360 [ 57.266454] ? lock_downgrade+0x990/0x990 [ 57.270576] ? mark_held_locks+0xaf/0x100 [ 57.274695] ? __local_bh_enable_ip+0x9d/0x160 [ 57.279254] tcp_v4_do_rcv+0x55c/0x7d0 [ 57.283106] ? tcp_v4_do_rcv+0x55c/0x7d0 [ 57.287138] __release_sock+0x124/0x360 [ 57.291089] release_sock+0xa4/0x2a0 [ 57.294771] ? __release_sock+0x360/0x360 [ 57.298889] ? find_held_lock+0x35/0x1d0 [ 57.302922] __inet_stream_connect+0x651/0xf00 [ 57.307478] ? inet_bind+0x910/0x910 [ 57.311163] ? mark_held_locks+0xaf/0x100 [ 57.315277] ? __local_bh_enable_ip+0x9d/0x160 [ 57.319836] ? __init_waitqueue_head+0x140/0x140 [ 57.324560] ? trace_hardirqs_on+0xd/0x10 [ 57.328679] ? __local_bh_enable_ip+0x9d/0x160 [ 57.333238] inet_stream_connect+0x58/0xa0 [ 57.337442] SYSC_connect+0x204/0x470 [ 57.341210] ? SYSC_bind+0x3f0/0x3f0 [ 57.344903] ? ioctl_preallocate+0x2b0/0x2b0 [ 57.349285] ? selinux_capable+0x40/0x40 [ 57.353319] ? __fd_install+0x68b/0x6a0 [ 57.357262] ? sock_map_fd+0x53/0x70 [ 57.360949] ? entry_SYSCALL_64_fastpath+0x5/0xbe [ 57.365764] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 57.370755] SyS_connect+0x24/0x30 [ 57.374265] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 57.378998] RIP: 0033:0x43ff69 [ 57.382155] RSP: 002b:00007ffd0e014d48 EFLAGS: 00000217 ORIG_RAX: 000000000000002a [ 57.390446] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043ff69 [ 57.397686] RDX: 0000000000000010 RSI: 00000000200d1ff0 RDI: 0000000000000004 [ 57.404925] RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000 [ 57.412162] R10: 0000000000000000 R11: 0000000000000217 R12: 00000000004018d0 [ 57.419400] R13: 0000000000401960 R14: 0000000000000000 R15: 0000000000000000 [ 57.426866] Dumping ftrace buffer: [ 57.430439] (ftrace buffer empty) [ 57.434120] Kernel Offset: disabled [ 57.437728] Rebooting in 86400 seconds..